Jefferson Lab Weekly Briefs
October 23, 2013
12 GeV Upgrade
The several parts for the Super High Momentum Spectrometer support carriage have been welded together into the final structure in Hall C. This has been followed by the start of construction of the concrete shield house on the carriage. The upgrade to the cryogenics infrastructure to accommodate the new spectrometer has begun. Welding of the helium vessel is underway for the Horizontal Bend (HB) dipole magnet, with one coil now “captive.” Manufacturing of parts for the nitrogen shield and support links for the HB is continuing, and parts for the vacuum vessel are ready. For the Q1 quadrupole magnet, the yoke quadrants and four coil assemblies have all been test-fit and some small adjustments have been made. Assembly is underway to form the cold mass for Q1, which will subsequently be inserted into the helium vessel, which will then be welded closed. The thermal shield is being fabricated, and the outer vacuum cryostat is ready. For the dipole magnet, the prototype winding is nearing completion, after which an epoxy-bonding test will be made. Very similar tooling and techniques will later be used to fabricate the Q2 and Q3 quadrupole magnets starting in the spring.
Jefferson Lab Published Journal Articles, Oct. 14-19
Submit your papers for approval to the Jefferson Lab Publications database. The next Publications Refresher Course will take place Monday, Dec. 8 at 9 a.m. in CEBAF Center room F226. To attend, R.S.V.P. to Kim Kindrew.
All Electrical Engineering Systems (EES) groups are actively working on Hot Checkout activities in preparation for beam startup in November. Thousands of devices need to be checked and verified as ready for beam operation. The Instrument and Controls (I&C) group is responsible for beam position monitors, vacuum system pumps and valve controls, harps, viewers and other diagnostics. The Radiofrequency group has been checking the “warm RF” components in the injector region and is upgrading the RF system for the R100 cryomodule in the injector. Magnet group personnel have been performing polarity, continuity and high-potential checks on tunnel magnets. The Safety System group has supported certifications of equipment being brought back online and is performing functional checks of all their equipment. The injector region is nearly ready for beam, and a significant portion of the Run1 hardware (one-pass beam through the accelerator) has been checked. Much remains to be done, but a good start has been made, demonstrating for this week’s Accelerator Readiness Review that the lab is on track to successfully meet its goals.
JLab Calendar of Events
Oct. 22-23: Accelerator Readiness Review
Environment, Safety, Health and Quality
Distractions and Looming Deadlines
However, this drive to meet schedules or our desire to do well can allow a "hurry up" or "take a shortcut" approach to creep into our work. We generally know the outcome from this approach - either an injury or accident that causes equipment or facility damage that will take a long time to fix. There is an old safety adage: There is never enough time to do it right, but there is a lot of time to fix it. Spend a few extra minutes, or however long it takes, to always do it right the first time. This will put us all ahead in the end.
Computing and Networking Infrastructure
Windows Software Updates
Copying and Printing Conservation of Resources
Red Cross Blood Drive Set for Oct. 30
Baggage Check Fees Added by United Airlines
JAG Tailgate Set for Tues., Oct. 29
United Way Campaign Ends Soon
Tracking Thomas at Jefferson Lab
Hunter Evans correctly guessed the location for October 16. Honorable mentions go to Sam Holben and Christopher Perry. Check out Tracking Thomas on flickr for a better view of his last location and this week's new mystery photo.
|JLab Weekly Briefs is an ongoing publication providing information on the status of safety, accelerator operations, experiments, free-electron laser, reviews, upcoming activities and special events. Deadline for submission is every Tuesday by 10 a.m. Submit new items to: Public Affairs or contact Kandice Carter at x7263.|